Flue air strainer



July 7, 1931. G E, AND R 1,813,584

FLUE AIR STRAINER Filed Decf 16. 1929 Patented July 7, 1931 UNITED STATES PATENT OFFICE FLUE AIR STRAINER Application filed December 16, 1929. Serial No. 414,394.

The object of my invention is to make a flue air strainer. In flues, particularly those used in hot air systems in residences, it is desirable to prevent the dirt passing from the furnace through the register into the room. In a hot air system it is practically impossible to prevent soot and dirt from coming into the room through the register. My device provides means for preventing the dirt and soot from passing from the flue through the register into the room. Such a device must be selectively detachable, so that it may be cleaned at intervals. It must be simple in construction and easily applied to an existing flue and register.

lVith these and other obje;ts in view, my invention has relation to certain novel.features of construction and arrangement of parts, as will be hereinafter more fully described, pointed out in the claims andillustrated in the drawings, in which Fig. 1 is a front elevation of the portion of the inner wall of the room, together with the register including my device.

Fig. 2 is an enlarged sectional plan view of the flue with the register in cross section and my air strainer shown in a partially removed position.

Fig. 3 is an enlarged fragmental side elevation of the flue showing the register in position, as well as my air strain-er. In this 15 designates a slot formed in the lower front wall of the register grating 6 of such size to permit the insertion of the strainer 10. The cross sectional area of the strainer is the same as that of the cross section of the flue 7. lVhen the strainer 10 is in the position shown in Fig. 4, air from the flue 7 must pass through the strainer 10 in order to reach the register grating 6. The strainer 10 strains out the soot and dirt from the heated air and prevents it from passing upwardly in the flue 7 and through the register grating 6'. Since the structure 10 is in sliding engagement in the slot it may be easily removed, as would a drawer in a desk, for purpose of cleaning.

lVhat I claim and mean to secure by Letters Patent is:

1. In combination with a flue, a register grating, a strainer, said strainer in sliding engagement in a slot formed in said register grating.

2. In combination with a register grating having a slot formed therein, a strainer in sliding engagement in the slot of said register grating, said strainer comprising a frameand a perforated element, said perforated element supported in said frame.

In testimony whereof I aflix my signature.

GILBERT E. SANDERS.

view the air strainer is shown in its operative position.

Fig. 4 is an enlarged fragmental sectional elevation of the flue showing a portion of the register and my air strainer in detail.

Numeral 5 designates the inner wall of the room having the register grating 6 secured therein in the conventional manner. The flue 7 is formed by the rear member 8 and the side members 9.

Numeral l0 designates the strainer, which consists of the rectangular frame 11 with the laterally projecting front member 12. Nu-

meral 13 designates a handle positioned centrally on the laterally projecting front mem-. ber 12. Numeral 14 designates a perforated member secured in the rectangular frame 11. This perforated member 14 may be conventional screen cloth or fabric cloth. Numeral 

